#!/bin/bash
# ============================================
# 丹阳公益婚恋服务平台 — 一键部署脚本
# ============================================
# 用法：
#   ./scripts/deploy.sh             # 部署最新镜像
#   ./scripts/deploy.sh v1.2.3      # 部署指定版本
#   ./scripts/deploy.sh --rollback  # 回滚到上一版本
# ============================================
set -euo pipefail

VERSION="${1:-latest}"
ACTION="${2:-deploy}"
COMPOSE_FILE="${COMPOSE_FILE:-../infrastructure/docker-compose.prod.yml}"
GIT_REPO="${GIT_REPO:-https://github.com/danyang-match/platform.git}"

echo "============================================"
echo " 丹阳公益婚恋服务平台 — 部署脚本"
echo " 版本: ${VERSION} | 动作: ${ACTION}"
echo "============================================"

# 检查环境变量
if [ -z "${DOCKER_REGISTRY:-}" ]; then
  echo "警告: DOCKER_REGISTRY 未设置，将使用本地构建"
fi

# 进入基础设施目录
cd "$(dirname "$0")/.."

case "${ACTION}" in
  deploy)
    echo "[1/4] 拉取最新代码..."
    if [ -d ".git" ]; then
      git fetch origin
      git checkout main || git checkout master
      git pull --ff-only
    fi

    echo "[2/4] 构建并启动服务..."
    # 设置版本号
    export APP_VERSION="${VERSION}"
    docker compose -f "${COMPOSE_FILE}" up -d --build --pull always

    echo "[3/4] 等待服务健康检查..."
    sleep 10
    docker compose -f "${COMPOSE_FILE}" ps | grep -E "backend|postgres|redis" || true

    echo "[4/4] 验证健康状态..."
    curl -sf "http://localhost/api/v1/health/live" && echo " ✅ 后端健康" || echo " ❌ 后端不健康"
    curl -sf "http://localhost/version" && echo " ✅ 版本信息" || echo " ❌ 版本接口失败"

    echo ""
    echo "✅ 部署完成！版本: ${VERSION}"
    echo "   访问地址: https://match.danyang.gov.cn/admin/"
    ;;

  rollback)
    echo "[1/2] 回滚到上一版本..."
    # 查找上一个 image tag
    PREV_VERSION=$(docker images --format '{{.Tag}}' danyang-match-backend 2>/dev/null | grep -v "^latest$" | sort -V | tail -2 | head -1)
    if [ -z "${PREV_VERSION}" ]; then
      echo "错误: 找不到可回滚的镜像版本"
      exit 1
    fi
    echo "   回滚版本: ${PREV_VERSION}"

    export APP_VERSION="${PREV_VERSION}"
    docker compose -f "${COMPOSE_FILE}" up -d --no-build backend

    echo "[2/2] 验证回滚..."
    sleep 5
    curl -sf "http://localhost/api/v1/health/live" && echo " ✅ 回滚成功" || echo " ❌ 回滚后不健康"
    ;;

  *)
    echo "用法: $0 [version] [deploy|rollback]"
    echo "示例:"
    echo "  $0 v1.2.3 deploy"
    echo "  $0 rollback"
    exit 1
    ;;
esac